Air quality index [µg/m3]:
excellent ≤ 12
good ≤ 36
lightly polluted ≤ 60
moderately polluted ≤ 84
heavily polluted ≤ 120
severely polluted > 120
PM 2.5
[µg/m3]
PM 10
HOUR OPOLSKA ST. ROOF (BEFORE FILTERS)  AIR SUPPLIED TO OFFICES
12002excellentexcellent11excellent
11002excellentexcellent11excellent
10003excellentexcellent11excellent
09004excellentexcellent11excellent
08004excellentexcellent11excellent
07004excellentexcellent11excellent
06004excellentexcellent11excellent
05005excellentexcellent11excellent
040017goodexcellent31excellent
030016goodexcellent31excellent
02009excellentexcellent21excellent
010011excellentexcellent21excellent
000019goodexcellent31excellent
230022goodexcellent41excellent
220028goodexcellent51excellent
210023goodexcellent41excellent
200020goodexcellent31excellent
190015goodexcellent21excellent
18007excellentexcellent11excellent
17005excellentexcellent11excellent
16006excellentexcellent21excellent
15006excellentexcellent21excellent
14005excellentexcellent21excellent
13004excellentexcellent21excellent